🐛 Fix messages loading

lib/models/packet.dart

@@ -4,7 +4,7 @@ part 'packet.g.dart';
 
 @JsonSerializable()
 class NetworkPackage {
-  @JsonKey(name: 'w')
+  @JsonKey(name: 'w', defaultValue: 'unknown')
   String method;
   @JsonKey(name: 'e')
   String? endpoint;

lib/models/packet.g.dart

@@ -8,7 +8,7 @@ part of 'packet.dart';
 
 NetworkPackage _$NetworkPackageFromJson(Map<String, dynamic> json) =>
     NetworkPackage(
-      method: json['w'] as String,
+      method: json['w'] as String? ?? 'unknown',
       endpoint: json['e'] as String?,
       message: json['m'] as String?,
       payload: json['p'] as Map<String, dynamic>?,